and former israeli prime minister ehud olmert accused netanyahu of, quote, "waging war" on the obama administration. negotiators are expected to meet with iran in vienna next week just as the senate returns to tackle the sanctions issue. for more on the nuclear deal with iran, i'm joined by wendy sherman, the under secretary of state for political affairs. she was the lead negotiator of the agreement. welcome follow newshour again. >> thank you, good to be with you. >> ifill: this nuclear deal that was cut in geneva, will it hold? >> i think it will holdment because it's in iran's interest for it to hold. iran is looking for some economic relief. there's very little in this agreement that is the first step towards a comprehensive agreement which will give them the economic relief they're looking for. >> ifill: could it have happened without this secret bilateral talks that were happening on the side? we heard about the public ones in geneva. it turns out there were a lot of proof at ones too. >> there were private conversations. and that helped to deepen the conversation. but all of